ERR1#crm#platforma
Errors in the user's language — codes instead of server text

Every server rejection is now shown in the words of the interface — in Czech, English, or Russian, whichever is selected in your profile. Previously, technical English could appear under a form field ("Invalid input: expected string…", "Slug is reserved"), and hints in different places were sometimes in Czech, sometimes in Russian.
- Under form fields — a clear label: "Vyplňte toto pole", "Přesně 2 znaky", "Zadejte platný e-mail".
- Action rejections — an explanation of exactly what is wrong and what to do: "Tato adresa je vyhrazená — zvolte jinou", "V ukázkové kanceláři web nejde publikovat — použijte náhled v sekci Web", "Dokončený obchod se neuzavírá jinak — nejdřív jej znovu otevřete".
- No connection — a dedicated message instead of "Failed to fetch".

